Move command handling and updating off Browser and onto a helper object.

chrome/browser/ui/cocoa/command_observer_bridge.h

Index: chrome/browser/ui/cocoa/command_observer_bridge.h
===================================================================
--- chrome/browser/ui/cocoa/command_observer_bridge.h	(revision 144460)
+++ chrome/browser/ui/cocoa/command_observer_bridge.h	(working copy)
@@ -9,10 +9,12 @@
 #import <Cocoa/Cocoa.h>
 
 #include "base/compiler_specific.h"
-#include "chrome/browser/command_updater.h"
+#include "chrome/browser/command_observer.h"
 
 @protocol CommandObserverProtocol;
 
+class CommandUpdater;
+
 // A C++ bridge class that handles listening for updates to commands and
 // passing them back to an object that supports the protocol delcared below.
 // The observer will create one of these bridges, call ObserveCommand() on the
@@ -21,7 +23,7 @@
 // bridge will handle automatically unregistering for updates, so there's no
 // need to do that manually.
 
-class CommandObserverBridge : public CommandUpdater::CommandObserver {
+class CommandObserverBridge : public CommandObserver {
  public:
   CommandObserverBridge(id<CommandObserverProtocol> observer,
                         CommandUpdater* commands);
@@ -31,7 +33,7 @@
   void ObserveCommand(int command);
 
  protected:
-  // Overridden from CommandUpdater::CommandObserver
+  // Overridden from CommandObserver
   virtual void EnabledStateChangedForCommand(int command,
                                              bool enabled) OVERRIDE;